CN114915882A

CN114915882A - Hybrid speaker and audio reproducing apparatus

Info

Publication number: CN114915882A
Application number: CN202110187132.XA
Authority: CN
Inventors: 王泽�
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-08-16

Abstract

The invention provides a hybrid speaker, which comprises a low-frequency part and a high-frequency part, wherein the low-frequency part is configured to output medium-frequency sound or low-frequency sound, the low-frequency part comprises a moving coil unit structure, and the moving coil unit structure comprises a magnetic driving part; the high-frequency part is configured to output high-frequency sound, and comprises a balanced diaphragm unit structure; wherein the balanced diaphragm unit structure is configured as the magnetic driving part of the moving coil unit structure. The moving coil unit structure enables the hybrid loudspeaker to have excellent and strong middle and low frequency sound, and the balanced diaphragm unit structure enables the high frequency tone of the hybrid loudspeaker to be mellow; and the balance diaphragm unit structure and the moving coil unit structure share the magnetic driving part, so that the manufacturing cost of the hybrid loudspeaker is greatly reduced, the occupied internal space of the hybrid loudspeaker is reduced, and the volume of the hybrid loudspeaker can be further reduced to conform to the miniaturization trend of products. The invention also provides a sound production device with the loudspeaker.

Description

Hybrid speaker and audio reproducing apparatus

Technical Field

The present invention relates to the field of electronic devices, and in particular, to a hybrid speaker and an audio reproducing apparatus provided with the same.

Background

The existing loudspeaker generally adopts a moving coil type unit, the moving coil unit has outstanding and powerful low frequency, however, the moving coil unit is not accurate enough to the definition of high-frequency details, lacks polar frequency response, a vibrating diaphragm can not follow the quick response of a voice coil, the transient state and the attenuation characteristic are not good, and the embodiment is that the extremely high frequency response is insufficient on a frequency response curve.

Disclosure of Invention

An object of the present invention is to provide a hybrid speaker having excellent middle and high frequencies and an audio reproducing apparatus provided with the same.

In order to solve the above technical problem, the present invention provides a hybrid speaker including a low frequency part configured to output a middle frequency sound or a low frequency sound, and a high frequency part including a moving coil unit structure including a magnetic driving part; the high-frequency part is configured to output high-frequency sound, and comprises a balanced diaphragm unit structure; wherein the balanced diaphragm unit structure is configured as the magnetic driving part of the moving coil unit structure.

The invention also provides an audio reproduction device, which comprises a shell and a mixed loudspeaker, wherein the shell comprises an inner cavity and a sound outlet channel communicated with the inner cavity, the mixed loudspeaker is arranged in the inner cavity, and a first sound outlet hole and a second sound outlet hole of the mixed loudspeaker are communicated with the sound outlet channel.

The hybrid speaker of the present invention includes a balanced diaphragm unit structure and a moving coil unit structure, the balanced diaphragm unit structure being configured as the magnetic driving portion of the moving coil unit structure. Therefore, firstly, the moving coil unit structure enables the hybrid speaker to have excellent and powerful middle and low frequency sound, and the balanced diaphragm unit structure enables the high frequency tone of the hybrid speaker to be round; secondly, the magnetic driving part of the balanced diaphragm unit structure is used for the magnetic driving part and is also configured as the magnetic driving part of the moving coil unit structure, and the balanced diaphragm unit structure and the moving coil unit structure share the magnetic driving part, so that the manufacturing cost of the hybrid loudspeaker is greatly reduced, the occupied internal space of the hybrid loudspeaker is reduced, and the volume of the hybrid loudspeaker can be further reduced so as to comply with the miniaturization trend of products.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective structural view of a hybrid speaker according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1;

fig. 3 is an exploded perspective view of the hybrid speaker of fig. 1;

FIG. 4 is a schematic perspective view of the housing of FIG. 3;

FIG. 5 is a schematic perspective view of the housing of FIG. 4 from another perspective;

FIG. 6 is an enlarged perspective view of the balanced diaphragm unit structure and the first housing in FIG. 3;

FIG. 7 is a partially assembled cross-sectional view of the balanced diaphragm unit structure and the first housing of FIG. 6;

FIG. 8 is a schematic perspective view of the circuit board assembly of FIG. 3;

fig. 9 is a schematic perspective view of an audio reproducing apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Furthermore, the following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced. Directional phrases used in this disclosure, such as "top," "bottom," "front," "back," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and, therefore, should not be considered limiting of the invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed at … …" are to be broadly construed, e.g., as either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, fig. 1 is a schematic perspective structural diagram of a hybrid speaker 100 according to an embodiment of the invention; FIG. 2 is a sectional view taken along line II-II of FIG. 1; fig. 3 is an exploded perspective view of the hybrid speaker 100 of fig. 1. The hybrid speaker 100 according to one embodiment of the present invention includes a high-frequency part configured to output a high-frequency sound, and a low-frequency part, the high-frequency part including a balanced diaphragm unit structure 40, the balanced diaphragm unit structure 40 including a first diaphragm 42, the vibration of the first diaphragm 42 outputting the high-frequency sound; the low frequency part is configured to output a medium frequency tone and/or a low frequency tone, the low frequency part includes a moving coil unit structure 50, the moving coil unit structure 50 includes a second diaphragm 52 and a magnetic driving part; wherein the balanced diaphragm unit structure 40 is configured as the magnetic driving portion of the moving coil unit structure 50, and the magnetic driving portion drives the second diaphragm 52 to vibrate and input a middle frequency tone and/or a low frequency tone. Therefore, the magnetic driving part of the balanced diaphragm unit structure 40 is used for itself, and is configured as the magnetic driving part of the moving coil unit structure 50, i.e., the balanced diaphragm unit structure 40 and the moving coil unit structure 50 share the magnetic driving part.

The hybrid speaker 100 provided by the present invention includes a balanced diaphragm unit structure 40 and a moving coil unit structure 50, where the balanced diaphragm unit structure 40 is configured as the magnetic driving portion of the moving coil unit structure 50, that is, the balanced diaphragm unit structure 40 and the moving coil unit structure 50 share a magnetic driving portion. Therefore, first, the moving coil unit structure 50 provides the hybrid speaker 100 with excellent and powerful mid and low frequency sounds, and the balanced diaphragm unit structure 40 provides the hybrid speaker 100 with a mellow high frequency tone; secondly, the balance diaphragm unit structure 40 and the moving coil unit structure 50 share a magnetic driving part, which not only greatly reduces the manufacturing cost of the hybrid speaker 100, but also reduces the internal space occupied by the magnetic driving part of the hybrid speaker 100, and can further reduce the volume of the hybrid speaker 100 to comply with the miniaturization trend of products.

As shown in fig. 2, the hybrid speaker 100 further includes a first housing 30 and a second housing 20, the first housing 30 is disposed in an inner cavity of the second housing 20, the balanced diaphragm unit structure 40 and the moving coil unit structure 50 are both disposed in the inner cavity of the second housing 20, and the second housing 20 is configured as an outer frame of the moving coil unit structure 50. Preferably, the balanced diaphragm unit structure 40 and the moving coil unit structure 50 are axially disposed in the inner cavity of the second housing 30 along the second housing 20. In this embodiment, the first casing 30 is in a cylindrical shape, and the moving coil unit structure 50 further includes a voice coil 54 connected to the second diaphragm 52, and the voice coil 54 is partially sleeved outside the first casing 30. Because the balanced diaphragm unit structure 40 is disposed in the inner cavity of the first casing 30, and the voice coil 54 is at least partially axially sleeved outside the first casing 30, the magnetic driving portion of the balanced diaphragm unit structure 40 forms a magnetic field around the first casing 30, where the magnetic field is the magnetic driving portion of the moving coil unit structure 50; when the voice coil 54 is energized, the magnetic driving portion can drive the voice coil 54 to vibrate along the axial direction of the second housing 20.

Referring to fig. 2-5, fig. 4 is a schematic perspective view of the second housing 20 in fig. 3; fig. 5 is a perspective view of another perspective view of the second housing 20 in fig. 4. The second casing 20 includes a top wall 221 and a sidewall 223 surrounding the periphery of the top wall 221, the first casing 30 is connected to the inner side of the top wall 221, the periphery of the second diaphragm 52 is connected to the opening of the second casing 20, and the moving coil unit structure 50 is farther from the top wall 221 than the balanced diaphragm unit structure 40. At this time, the second diaphragm 52, the first casing 30, and the second casing 20 surround to form a first inner cavity 201. The second housing 20 includes at least a first sound outlet 2201 and a second sound outlet 2203, the first sound outlet 2201 communicates the first inner cavity 201 of the second housing 20 with the external space, and the first sound outlet 2201 is configured as a sound outlet channel of the low frequency portion. The first housing 30 has a second inner cavity 35, the second sound outlet port 2203 communicates the second inner cavity 35 of the first housing 30 with an external space, and the second sound outlet port 2203 is configured as a sound outlet passage of the high frequency part. Specifically, the second sound outlet 2203 is opened in the second casing 20, and the second sound outlet 2203 is located in the range of the area of the orthographic projection of the first casing 30 on the second casing 20.

In this embodiment, the first sound emitting hole 2201 is disposed on the sidewall 223, and the second sound emitting hole 2203 is disposed on the top wall 221. Preferably, the second sound emitting hole 2203 is located in the middle of the top wall 221; the periphery of the second diaphragm 52 is connected to one end of the inner peripheral wall of the side wall 223 away from the top wall 221. The second sound outlet hole 2203 corresponds to the first diaphragm 42, and sound generated by vibration of the first diaphragm 42 is transmitted from the second sound outlet hole 2203 through the second inner cavity 35; the first sound outlet hole 2201 corresponds to the second diaphragm 52, and sound generated by vibration of the second diaphragm 52 is emitted from the first sound outlet hole 2201 through the first inner cavity 201.

In this embodiment, the top wall 221 is a circular plate, and the side wall 223 is a circular cylinder surrounding the edge of the circular plate. In other embodiments, the top wall 221 may be, but is not limited to, an oval plate, a polygonal plate, a waist plate, etc., and the sidewall 223 is formed in a circle around the edge of the top wall 221.

As shown in fig. 2, 4-5, the side wall 223 includes a first cylinder 2231 surrounding an edge of the top wall 221, a second cylinder 2233 located at a rear side of the first cylinder 2231, and a connecting plate 2234 connected between the first cylinder 2231 and the second cylinder 2233, an inner diameter of the second cylinder 2233 is larger than an inner diameter of the first cylinder 2231, a periphery of the second diaphragm 52 is connected to an inner peripheral wall of the second cylinder 2233, and the first sound outlet 2201 is located in the connecting plate 2234. In this embodiment, the first cylinder 2231 and the second cylinder 2233 are both cylinders, the first cylinder 2231 and the second cylinder 2233 are coaxial, the connecting plate 2234 is a circular plate parallel to the top wall 221, and a plurality of first sound outlet holes 2201 are formed in the outer side of the connecting plate 2234 along the circumferential direction thereof; preferably, a plurality of the first sound outlet holes 2201 are arranged at equal intervals. A positioning groove 2235 is formed in the rear end of the inner circumferential wall of the second cylinder 2233, the positioning groove 2235 is formed in a circle along the circumference of the second cylinder 2233, and the periphery of the second diaphragm 52 is connected to the positioning groove 2235. Preferably, the periphery of the second diaphragm 52 is located in the locating groove 2235 through a connecting pad 521.

Preferably, the inner surface of the top wall 221 is provided with a wire slot 2214 communicated with the second sound outlet hole 2203, and the wire slot 2214 is used for accommodating a wire. In this embodiment, the wire slot 2214 extends along the radial direction of the top wall 221 and communicates with the second sound outlet hole 2203.

Preferably, the sidewall 223 far from the top wall 221 is provided with an outlet 2237, and the outlet 2237 is used for inserting a wire.

As shown in fig. 2, the balanced diaphragm unit structure 40 includes a first coil 43 and a second coil 44 disposed in the second inner cavity 35 of the first housing 30, the first coil 43 and the second coil 44 are coaxially disposed, the first coil 43 and the second coil 44 are located at two opposite sides of the first diaphragm 42, a first gap 422 is disposed between the first coil 43 and the second coil 44, and the first diaphragm 42 is disposed in the first gap 422. In this embodiment, the first diaphragm 42 is a circular superconducting magnetic micro amorphous ultrathin alloy flat film, the first coil 43, the second coil 44 and the first diaphragm 42 are coaxial, and the first coil 43 and the second coil 44 are used for driving the first diaphragm 42 to vibrate after being electrified to generate sound.

Further, the balanced diaphragm unit structure 40 further includes a first magnet 45 sleeved outside the first coil 43 and a second magnet 46 sleeved outside the second coil 44, the first magnet 45 and the second magnet 46 are accommodated in the second inner cavity 35 of the first shell 30, and the first gap 422 is formed between the first magnet 45 and the second magnet 46. In this embodiment, the first magnet 45 and the second magnet 46 are magnetic rings, and the first coil 43, the first magnet 45, the second coil 44, the second magnet 46 and the first diaphragm 42 are coaxial. A magnetic field is formed around the first magnet 45 and the second magnet 46, one end of the voice coil 54 away from the second diaphragm 52 is movably sleeved around the magnetic conductive plate 33, and when the voice coil 54 is energized, the voice coil 54 vibrates in the axial direction in the magnetic field formed by the first magnet 45 and the second magnet, so as to drive the second diaphragm 52 to vibrate to generate sound. The outer side refers to a side facing the same direction as the sound emission direction of the hybrid speaker 100, and the inner side refers to a side facing away from the sound emission direction of the hybrid speaker 100.

The first diaphragm 42 is located between the first magnet 45 and the second magnet 46, and the first coil 43 and the second coil 44 are respectively sleeved in the inner cavity of the first magnet 45 and the inner cavity of the second magnet 46 to form the high-frequency part in a matching manner; one end of the voice coil 54 is connected to the second diaphragm 52, and one end of the voice coil 54 away from the second diaphragm 52 is movably sleeved around the first housing 30 to form the low frequency portion. Therefore, the high frequency part and the low frequency part share one magnetic driving part, that is, the first magnet 45 and the second magnet 46 are engaged with both the first coil 43 and the second coil 44 of the balanced diaphragm unit structure 40 and the voice coil 52 of the moving coil unit structure 50. The balance diaphragm unit structure 40 and the moving coil unit structure 50 share a magnetic driving part, so that the manufacturing cost of the hybrid speaker 100 is reduced, and the magnetic driving part occupies the inner space of the second housing 20, so as to comply with the miniaturization trend of products. When the first coil 43 and the second coil 44 are energized, the first diaphragm 42 is magnetized, so that the first diaphragm 42 vibrates up and down along the axial direction under the force between the first magnet 45 and the second magnet 46, and the force directly acts on the first diaphragm 42, so that no transmission loss or transmission delay exists, and high-frequency transient and extension are better; in addition, the hybrid speaker 100 has inherent advantages in dynamic and sound information content by being evenly distributed throughout the first diaphragm 42.

Preferably, the first diaphragm 42 is made of a polymer material with good flexibility, so that the timbre of the hybrid speaker 100 is high-frequency rounded. Because the periphery of the second diaphragm 52 is connected to the inner peripheral wall of the second casing 20, one end of the voice coil 54 is connected to the second diaphragm 52, the other end of the voice coil 54 opposite to the first magnet 45 and the second magnet 46 is movably sleeved around the first magnet 45 and the second magnet 46, and the voice coil 54 is a coil wound by an insulated wire, when a changing audio signal is input to the voice coil 54, the voice coil 54 is magnetized, and the magnetic fields of the first magnet 45 and the second magnet 46 make the voice coil 54 bear a force to drive the second diaphragm 52 to vibrate and sound, so that the coil unit structure 50 has a powerful low frequency. The hybrid speaker 100 of the present application has both excellent and powerful low frequencies and enables sound quality high frequencies to be rounded.

Optionally, the second diaphragm 52 is made of a light and flexible polymer material; the second diaphragm 52 may be a single-layer composite or a multi-layer composite; the second diaphragm 52 may be integrally formed or separately formed in structure.

Referring to fig. 2, fig. 3 and fig. 6-fig. 7, fig. 6 is an enlarged perspective view of the balanced diaphragm unit structure 40 and the first housing 30 in fig. 3; fig. 7 is a partially assembled cross-sectional view of the balanced diaphragm unit structure 40 and the first housing 30 in fig. 6. The balanced diaphragm unit structure 40 is accommodated in the first casing 30, the first casing 30 is used for positioning the balanced diaphragm unit structure 40 on the top wall 221, a second gap 601 is provided between the first casing 30 and the side wall 223, and the second gap 601 is used for disposing the voice coil 54, that is, one end of the voice coil 54 far away from the second diaphragm 52 is movably inserted in the second gap 601. Specifically, the first casing 30 includes a connecting cylinder 31 sleeved outside the first magnet 45 and the second magnet 46, and a magnetic conductive plate 33 connected to one end of the connecting cylinder 31 far away from the first magnet 45, and the second magnet 46 is stacked on the magnetic conductive plate 33. The magnetic conductive plate 33 is configured to adjust the magnetic field of the balanced diaphragm unit structure 40 to realize the function of the magnetic driving part in the moving coil unit structure 50. Specifically, the magnetic conductive plate 33 is made of a magnetic conductive material such as an iron plate, and the magnetic conductive plate 33 is configured to adjust the magnetic fields of the second magnet 46 and the first magnet 45, so that most of the magnetic field lines of the second magnet 46 and the first magnet 45 pass through the magnetic conductive plate 33 and are conducted to the periphery of the voice coil 54, thereby implementing the function of the magnetic driving portion in the moving coil unit structure 50.

In this embodiment, one end of the connecting cylinder 31, which is far away from the magnetic conductive plate 33, is fixedly connected to the top wall 221 in a clamping manner, a welding manner, or the like, and surrounds the second sound outlet 2203, and the connecting cylinder 31 and the magnetic conductive plate 33 surround the second inner cavity 35; the connecting cylinder 31 is disposed coaxially with the first cylinder 2231, an outer diameter of the connecting cylinder 31 is smaller than an inner diameter of the first cylinder 2231, an outer diameter of the magnetic conductive plate 31 is equal to or slightly larger than the outer diameter of the connecting cylinder 31, and the outer diameter of the magnetic conductive plate 31 is smaller than the inner diameter of the first cylinder 2231, so that the second annular gap 601 is formed between the connecting cylinder 31 and the first cylinder 2231. Specifically, the connecting cylinder 31 is formed by a metal sheet surrounding along the circumferential direction of the magnetic conductive plate 33, and a wire groove 312 is formed in the circumferential wall of the connecting cylinder 31.

In this embodiment, the magnetic conductive plate 33 is a circular iron plate, the connecting cylinder 31 is a cylinder surrounding the circular plate, and the magnetic conductive plate 33 and the connecting cylinder 31 may be fixedly connected by clamping or welding. Preferably, the inner surface of the magnetic conducting plate 33 is also provided with a wire slot 332 communicated with the wire slot 312.

In this embodiment, the outer diameter and the inner diameter of the first magnet 45 are equal to the outer diameter and the inner diameter of the second magnet 46, and the outer diameter and the inner diameter of the first coil 43 are equal to the outer diameter and the inner diameter of the second coil 44; the outer diameter of the first coil 43 is equal to the inner diameter of the first magnet 45, so that the first coil 43 can be clamped in the inner cavity of the first magnet 45; the outer diameter of the second coil 44 is equal to the inner diameter of the second magnet 46, so that the second coil 44 can be clamped in the inner cavity of the second magnet 46, and the second coil 44 and the second magnet 46 are coaxial; the first magnet 45 and the second magnet 46 have an outer diameter equal to or slightly less than an inner diameter of the connector barrel 31 so that the first magnet 45 and the second magnet 46 are mounted to the inner cavity of the first housing 30. The first coil 43 is electrically connected to the circuit board of the hybrid speaker 100 by a wire 432, and the second coil 44 is electrically connected to the circuit board of the hybrid speaker 100 by a wire 442, so that the first coil 43 and the second coil 44 can be connected to the circuit board of the hybrid speaker 100.

The balanced diaphragm unit structure 40 further includes a first gasket 47 and a second gasket 48, the first gasket 47 is disposed between the periphery of the first diaphragm 42 and the first magnet 45, and the second gasket 48 is disposed between the periphery of the first diaphragm 42 and the second magnet 46. The first gasket 47 and the second gasket 48 are respectively located on two opposite sides of the first diaphragm 42 to position the first diaphragm 42. The outer diameters of the first washer 47 and the second washer 48 are equal to or slightly less than the inner diameter of the connecting cylinder 31, and the inner diameters of the first washer 47 and the second washer 48 are respectively much larger than the inner diameters of the first magnet 45 and the second magnet 46, so that the front side and the rear side of the first diaphragm 42 have enough space to facilitate the vibration of the first diaphragm 42.

When the balanced diaphragm unit structure 40 is assembled to the first casing 30, the first magnet 45 and the second magnet 46 are respectively sleeved outside the first coil 43 and the second coil 44; positioning the first gasket 47 and the second gasket 48 on two opposite side edges of the first diaphragm 42, i.e. the first diaphragm 42 is clamped between the first gasket 47 and the second gasket 48; the second magnet 46, the first diaphragm 42, the first washer 47 and the second washer 48, and the first magnet 45 are sequentially disposed in the second inner cavity 35 of the first housing 30, such that the second magnet 46, the second washer 48, the first diaphragm 42, the first washer 47, and the first magnet 45 are stacked in an axial direction, the wire 442 of the second coil 44 extends out of the connecting cylinder 31 along the wire slot 332, and the wire 432 of the first coil 43 extends out of the connecting cylinder 31 through the wire slot 312. At this time, the magnetic conductive plate 33 supports the balanced diaphragm unit structure 40, the first diaphragm 42, the first coil 43, and the second coil 44 are coaxial, and the first magnet 45 and the second magnet 46 are clamped between a first washer 47 and a second washer 48, so that the first gap 422 is formed between the first magnet 45 and the second magnet 46; the first gasket 47 and the second gasket 48 clamp and position the first diaphragm 42, so that the first diaphragm 42 is located in the first gap 422.

In other embodiments, the connecting cylinder 31 and the magnetic conductive plate 33 may also be integrally formed.

In other embodiments, the first gasket 47, the second gasket 48 and the first diaphragm 42 may be made of different materials by integral molding.

Referring to fig. 2-3 and 8, fig. 8 is a schematic perspective view of the circuit board assembly 90 in fig. 3. The hybrid speaker 100 further includes a circuit board assembly 90, the circuit board assembly 90 includes a first circuit board 91 disposed on the top wall 221 and a second circuit board 93 electrically connected to the first circuit board 91, and the second circuit board 93 is positioned on the sidewall 223. The first circuit board 91 is used for controlling the output of the high-frequency part, and the first coil 43 and the second coil 44 are respectively electrically connected to the first circuit board 91; the second circuit board 93 is used for controlling the output of the low frequency part, and the voice coil 54 is electrically connected to the second circuit board 93. Specifically, the first circuit board 91 is stacked on the outer side of the top wall 221, a through hole 912 and two threading grooves 913 communicated with the through hole 912 are formed in the middle of the first circuit board 91, the through hole 912 is used for being communicated with the second sound outlet hole 2203 of the top wall 221, and the threading grooves 913 are used for allowing the

wires

432 and 442 to pass through. A bonding pad is arranged on the first circuit board 91 adjacent to each threading slot 913, and the bonding pad is used for electrically connecting the

wires

432 and 442; preferably, one end of one of the threading slots 913, which is far away from the through hole 912, is provided with a first pad 915, and the first pad 915 is used for electrically connecting to the wire 432; the other end of the threading slot 913, which is away from the through hole 912, is provided with a second pad 916, and the second pad 916 is used for electrically connecting to the wire 442. Preferably, the first circuit board 91 is a circular flexible circuit board.

In this embodiment, the second circuit board 93 is positioned outside the connecting plate 2234, specifically, the second circuit board 93 is a circular arc-shaped PCB, the second circuit board 93 is provided with a third pad 931, and the third pad 931 is used for electrically connecting the voice coil 54. The second circuit board 93 is further provided with an external signal port 933, and the external signal port 933 is used for electrically connecting an external signal wire. The second circuit board 93 and the first circuit board 91 are electrically connected by a flexible flat cable 95, preferably, one end of the flexible flat cable 95 is connected to the outer periphery of the first circuit board 91, and the other end of the flexible flat cable 95 is connected to the inner periphery of the second circuit board 93. In other embodiments, the flex cable 95 may be replaced by a flexible circuit board or a conductive wire.

A frequency divider 96 is further disposed on the circuit board assembly 90, and the frequency divider 96 is used for frequency division. Specifically, the crossover 96 filters out the high frequency portion of the bass system and the low frequency portion of the treble system, thereby combining the low frequency portion of the bass system and the high frequency portion of the treble system to provide better full band performance of the hybrid speaker 100. Wherein the frequency divider 96 comprises a filter capacitor; specifically, the frequency divider 96 may be a filter capacitor, and the filter capacitor may be soldered on the first circuit board 91 or the second circuit board 93. In this embodiment, the frequency divider 96 is soldered on the first circuit board 91.

In other embodiments, the frequency divider 96 may also be a circuit with a filtering function, such as a filter.

In other embodiments, a high-frequency filter capacitor and a low-frequency filter capacitor, which are used for filtering the high-frequency part of the bass system and the low-frequency part of the treble system, respectively, may be used together instead of the variable capacitor.

As shown in fig. 2 and 3, the hybrid speaker 100 further includes a rear cover 70, the rear cover 70 is engaged with the side wall 223, and the rear cover includes a tuning hole 75. Specifically, the back cover 70 includes a back plate 71 and an edge plate 73 surrounding the back plate 71, the back plate 71 and the edge plate 73 form a box-shaped structure, the tuning hole 75 is opened in the back plate 71, the edge plate 73 is used for the sidewall 223 to cooperate, and preferably, the edge plate 73 abuts against the periphery of the back side of the second diaphragm 52.

Preferably, the first sound outlet 2201, the second sound outlet 2203 and the tuning hole 75 are respectively covered with tuning pieces, which are not only used for adjusting the sound volume, but also used for preventing dust or foreign matters from entering the interior of the mixing speaker 100 through the first sound outlet 2201, the second sound outlet 2203 and/or the tuning hole 75. Specifically, the first tuning piece 81 covers the first sound emitting hole 2201, the second tuning piece 83 covers the second sound emitting hole 2203, and the third tuning piece 85 covers the tuning hole 75. In this embodiment, the first tuning part 81, the second tuning part 83, and the third tuning part 85 are each a tuning net.

Referring to fig. 1 to 3 and fig. 7 to 8, when the hybrid speaker 100 is assembled, the circuit board assembly 90 is mounted on the second housing 20, specifically, the first circuit board 91 is fixed to the outer side of the top wall 221, so that the through hole 912 faces the second sound outlet 2203; the second circuit board 93 is fixedly attached to the outer side of the connecting plate 2234; the first casing 30 accommodating the balanced diaphragm unit structure 40 is accommodated in the inner cavity of the second casing 20, so that the

conductive wires

432 and 442 of the first and

second coils

43 and 44 pass through the second sound outlet 2203 and the threading slot 913 along the linear slot 2214 and then are connected to the first bonding pad 915 and the second bonding pad 916 respectively; fixedly connecting the connecting cylinder 31 to the inner side of the top wall 221 away from the magnetic conductive plate 33, so that the inner cavity of the first coil 43 faces the second sound outlet 2203; at this time, the second gap 601 in a ring shape is formed between the outer circumferential surface of the first housing 30 and the inner circumferential surface of the first cylinder 2231. The moving coil unit structure 50 is installed in the positioning groove 2235 of the second cylinder 2233 through the connection pad 521, the connection pad 521 can be fixed to the second casing 20 by gluing, clamping, or the like, so that the second diaphragm 52 is fixedly connected to the second casing 20, one end of the voice coil 54 away from the second diaphragm 52 is movably inserted into the second gap 601, so that the magnetic conductive plate 33 of the first casing 30 at least extends to the axial middle position of the voice coil 54, and the lead connected to the voice coil 54 passes through the outlet 2237 and then is connected to the third pad 931 of the second circuit board 93; covering the rear cover 70 on the rear side of the moving coil unit structure 50, specifically, clamping the edge plate 73 of the rear cover 70 in the positioning groove 2235 and abutting against the periphery of the second diaphragm 52, so that the rear cover 70 is fixed on the rear side of the second housing 20; and then the first sound outlet hole 2201, the second sound outlet hole 2203 and the tuning hole 75 are respectively covered with tuning parts.

At this time, the axis of the second diaphragm 52 is collinear with the axis of the first diaphragm 42, that is, the balanced diaphragm unit structure 40 and the moving coil unit structure 50 are arranged along the axial direction of the second housing 20, the balanced diaphragm unit structure 40 is located at the front side of the moving coil unit structure 50, the second inner cavity 35 of the first housing 30 is communicated with the second sound outlet 2203, and the sound generated by the vibration of the first diaphragm 42 passes through the second inner cavity 35 and then is transmitted out of the second sound outlet 2203; the first inner cavity 201 of the second housing 20 is communicated with the first sound outlet hole 2201, and the sound generated by the vibration of the second diaphragm 52 is transmitted from the first sound outlet hole 2201.

When no current flows through the first coil 43 and the second coil 44, the first diaphragm 42 is neutralized, and the first diaphragm 42 is positioned in the center of the first gap 422 due to the balance between the upper and lower magnetic fields of the first magnet 45 and the second magnet 46 and the restoring force of the diaphragm itself. When an audio signal from the outside is applied to the first circuit board 91, so that an audio current passes through the first coil 43 and the second coil 44, the first coil 43 and the second coil 44 generate a magnetic field varying with the audio current, the magnetic field and the magnetic fields of the first magnet 45 and the second magnet 46 generate an interaction force, the interaction force makes the first diaphragm 42 vibrate along with the audio current in the magnetic fields of the first magnet 45 and the second magnet 46, and the vibration of the first diaphragm 42 generates a sound having the same waveform as the original audio signal. Specifically, when the current flows in the first and

second coils

43 and 44 are in the positive period, the first diaphragm 42 is N-polarized while the directions of the internal magnetic fields of the first and

second coils

43 and 44 are directed inward toward each other, and thus the first diaphragm 42 moves in the front direction; when the current flow in the first coil 43 and the second coil 44 is in the negative period, the first diaphragm 42 is S-polarized while the internal magnetic field directions of the first coil 43 and the second coil 44 are opposite to each other toward the outside, and thus the first diaphragm 42 moves in the rear direction. The first diaphragm 42 can thereby be made to vibrate with the audio current to generate a sound having the same waveform as the original audio signal, which is transmitted from the second sound output hole 2203. In addition, the magnetization direction can be changed according to the magnetic pole arrangement direction of the first magnet 45 and the second magnet 46.

Since one end of the voice coil 54 away from the second diaphragm 52 is sleeved on the outer circumference of the first casing 30, the voice coil 54 is placed in the magnetic field generated by the first magnet 45 and the second magnet 46. When an audio signal from the outside is applied to the second circuit board 93, an audio current flows through the voice coil 54, the voice coil 54 generates a magnetic field varying with the audio current, the magnetic field and a magnetic circuit generated by the first magnet 45 and the second magnet 46 form an interaction force, the interaction force causes the voice coil 54 to vibrate up and down along with the audio current, and the second diaphragm 52 and the voice coil 54 are connected together, so that the voice coil 54 drives the second diaphragm 52 to vibrate, the second diaphragm 52 vibrates to generate a sound having the same waveform as the original audio signal, and the sound is transmitted from the first sound output hole 2201.

In the present invention, the balance diaphragm unit structure 40 and the moving coil unit structure 50 share the first magnet 45 and the second magnet 46, so that the thickness of the moving coil unit structure 50 is reduced by at least 2 mm, thereby reducing the space occupied by the axial arrangement of the balance diaphragm unit structure 40 and the moving coil unit structure 50, and enabling the volume of the hybrid loudspeaker 100 to be reduced. The radial area of the first diaphragm 42 is large, so that the sound pressure of the first diaphragm 42 can be further improved, the high-frequency response can be greatly widened, and the frequency response can be greatly improved in a frequency range of 8 KHz-40 KHz. Further, the radial area of the second diaphragm 52 is larger than that of the first diaphragm 42, so that the second diaphragm 52 has a larger movement stroke, and the moving coil unit structure 50 has a high and powerful low frequency.

The balanced diaphragm unit structure 40 and the moving coil unit structure 50 of the hybrid speaker 100 are respectively suitable for a high-frequency part and a middle-low frequency part, that is, the balanced diaphragm unit structure 40 and the moving coil unit structure 50 can independently focus on their own voice ranges and produce sounds coaxially; the inner diameter of the voice coil 54 is larger than the diameter of the first diaphragm 42, so that the voice coil 54 with a large inner diameter is specially used for expressing low frequency with abundant and full elasticity, the first diaphragm 42 is favorable for high-frequency transient high resolution, and a sound field is naturally wide.

As shown in fig. 9, the present invention further provides an audio reproducing apparatus 300, which includes a housing 301 and the mixing speaker 100, wherein the housing 301 includes an inner cavity and a sound outlet channel 303 communicating with the inner cavity, the mixing speaker 100 is disposed in the inner cavity of the housing 301, and a first sound outlet 2201 and a second sound outlet 2203 of the mixing speaker 100 are communicated with the sound outlet channel 303. Sound generated by the hybrid speaker 100 enters the sound outlet channel 303 through the first sound outlet port 2201 and the second sound outlet port 2203, and then is emitted from the sound outlet channel 303.

The audio reproduction device 300 further comprises a battery 305 electrically connected to the hybrid speaker 100, the battery 305 being used to power the hybrid speaker 100 and other electronic devices. Due to the reduced volume of the hybrid speaker 100, i.e., the space occupied by the hybrid speaker 100 in the inner cavity of the housing 301 is reduced, the volume of the battery 305 can be increased to improve the endurance of the audio reproduction apparatus 300; or to facilitate the layout of other electronic devices or to further reduce the overall size of the audio reproduction apparatus 300 without changing the size of the battery 305.

In this embodiment, the audio reproducing apparatus 300 is an earphone, and the casing 301 of the earphone is provided with a sound guiding tube along the sound outlet channel 303, and the sound guiding tube is sleeved with an ear cap 306. When the earphone is inserted into the ear canal of the user through the earcap 306, because the balanced diaphragm unit structure 40 is closer to the sound outlet channel 303 than the moving coil unit structure 50, namely, the first diaphragm 42 of the hybrid speaker 100 is located in the front of the mid-sole-frequency moving-coil diaphragm system and closer to the ear canal of the user, the path through which the sound wave passes is shortened, so that the sound is clearer, and the user experience is improved.

In other embodiments, the audio reproduction apparatus 300 may also be a sound box or the like. The hybrid speaker 100 of the present invention can be applied to electronic products such as computers, televisions, mobile phones, etc. which need to generate sound.

The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.

Claims

1. A hybrid speaker, comprising: a low frequency part configured to output a middle frequency tone or a low frequency tone, the low frequency part including a moving coil unit structure including a magnetic driving part; a high-frequency part configured to output high-frequency tones, the high-frequency part including a balanced diaphragm unit structure; wherein the balanced diaphragm unit structure is configured as the magnetic driving part of the moving coil unit structure.

2. The hybrid loudspeaker of claim 1, wherein the balanced diaphragm unit structure comprises a first housing, the first housing being cylindrical in shape; the moving coil unit structure comprises a voice coil, and the voice coil is partially sleeved outside the first shell.

3. The hybrid speaker of claim 2, wherein the balanced diaphragm unit structure further comprises a first coil, a second coil and a first diaphragm disposed in the inner cavity of the first housing, the first coil and the second coil are coaxial, a first gap is disposed between the first coil and the second coil, and the first diaphragm is disposed in the first gap.

4. The hybrid loudspeaker of claim 3, wherein the balanced diaphragm unit structure further comprises a first magnet sleeved outside the first coil and a second magnet sleeved outside the second coil, and the first gap is located between the first magnet and the second magnet.

5. The hybrid loudspeaker of claim 4, wherein the balanced diaphragm unit structure further comprises a first washer and a second washer disposed in the first gap, the first washer being disposed between the first diaphragm and the first magnet, the second washer being disposed between the first diaphragm and the second magnet, the first washer and the second washer positioning the first diaphragm.

6. The hybrid speaker of claim 4, wherein the first housing comprises a connecting cylinder sleeved outside the first magnet and the second magnet, and a magnetic conductive plate connected to an end of the connecting cylinder away from the first magnet, wherein the second magnet is stacked on the magnetic conductive plate, and the magnetic conductive plate is configured to adjust a magnetic field of the balanced diaphragm unit structure to realize the function of the magnetic driving portion in the moving coil unit structure.

7. The hybrid speaker of claim 6, further comprising a second housing, wherein the second housing is configured as an outer frame of the moving-coil unit structure, the first housing is connected to an inner wall of the second housing, the moving-coil unit structure further comprises a second diaphragm connected to the voice coil, and an end of the voice coil, which is far away from the second diaphragm, is sleeved around the magnetic conductive plate.

8. The hybrid speaker of claim 7, wherein the second enclosure comprises: a first sound outlet hole communicating the first inner cavity of the second housing with an external space, the first sound outlet hole being configured as a sound outlet passage of the low frequency part.

9. The hybrid speaker of claim 8, wherein the second enclosure comprises: a second sound outlet hole communicating the second inner cavity of the first housing with an external space, the second sound outlet hole being configured as a sound outlet passage of the high frequency part.

10. The hybrid speaker of claim 9, wherein the second diaphragm is connected at a periphery thereof to an opening of the second housing, and the second diaphragm, the first housing, and the second housing enclose the first inner cavity.

11. The hybrid speaker of claim 10, wherein the second housing includes a top wall and a side wall surrounding a periphery of the top wall, an end of the connecting cylinder away from the magnetic conductive plate is connected to the top wall, the first sound outlet is opened in the side wall, and the second sound outlet is opened in the top wall.

12. The hybrid speaker of claim 11, wherein the side wall includes a first cylinder surrounding an edge of the top wall, a second cylinder located at an end of the first cylinder away from the top wall, and a connecting plate connected between the first cylinder and the second cylinder, a periphery of the second diaphragm is connected to an inner peripheral wall of the second cylinder, and the first sound outlet is opened in the connecting plate.

13. The hybrid speaker of claim 12, wherein the second cylinder has an inner diameter greater than an inner diameter of the first cylinder.

14. The hybrid speaker of claim 12, wherein the connector barrel is disposed coaxially with the first cylinder body, an outer diameter of the connector barrel being smaller than an inner diameter of the first cylinder body; so that a second gap is formed between the connection cylinder and the first cylinder, and the second gap is used for arranging the voice coil.

15. The hybrid speaker of claim 11, further comprising a back cover, the back cover cooperating with the sidewall, the back cover including a tuning hole.

16. The hybrid speaker of claim 11, further comprising a first circuit board disposed outside the top wall, wherein the first coil and the second coil are electrically connected to the first circuit board, respectively.

17. The hybrid speaker of claim 16, wherein the first circuit board is positioned outside the top wall, a wire receiving slot is formed in the top wall, the first coil and the second coil are connected to the first circuit board through wires, and the wires are received in the wire receiving slot.

18. The hybrid speaker of claim 16, further comprising a second circuit board disposed outside the sidewall, the voice coil being electrically connected to the second circuit board.

19. An audio reproduction apparatus, comprising a housing and the mixing speaker according to any one of claims 1-18, wherein the housing comprises an inner cavity and a sound outlet channel connected to the inner cavity, the mixing speaker is disposed in the inner cavity, and the first sound outlet and the second sound outlet of the mixing speaker are connected to the sound outlet channel.